Ambiguous warning about SELinux in dscreate for non-root user

[vashirov]

Description of problem:
When an instance is created using dscreate under non-root user, there is a scary looking ambiguous warning:

Selinux support will be disabled, continue? [yes]:

It's not clear to the user what exactly are the implications (system-wide disabling of SELinux?).

We should provide a better wording for this question, for example

SELinux contexts for instance files will not be applied, continue? [yes]:

Or remove it completely, since there is no other choice and the implications are benign.

Version-Release number of selected component (if applicable):
389-ds-base-2.1.5-4.module+el9dsrv+16995+8a75ed16.x86_64

How reproducible:
always

Steps to Reproduce:
$ mkdir -p bin
$ dscreate ds-root $HOME/test $HOME/bin
$ hash -r
$ dscreate interactive

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=2151944

[progier389]

IMHO the only interest of the original message was to let the user realize that he have forgot the 'sudo' so better tells it explicitly!
if uid is != 0 there are two cases. Either PREFIX environment variable is set
and we should not log anything (the SeLinux context of the $PREFIX directory (typically the user one) will then be used)
if PREFIX is not set we should log an error message telling that the command should be run with sudo and exit

[vashirov]

2277511..021f78c 389-ds-base-3.0 -> 389-ds-base-3.0
6346891..c9cea56 389-ds-base-2.5 -> 389-ds-base-2.5
29de3fa..f825a38 389-ds-base-2.4 -> 389-ds-base-2.4
ce0196d..4bd674f 389-ds-base-2.3 -> 389-ds-base-2.3
0570701..770a8d1 389-ds-base-2.2 -> 389-ds-base-2.2
5196cb0..e8f52e0 389-ds-base-2.1 -> 389-ds-base-2.1
1ca17cf..aca041c 389-ds-base-2.0 -> 389-ds-base-2.0